Microvolt T-wave Alternans in Adult Patients with Repaired Tetralogy of Fallot

Abstract

In adults after ToF repair, abnormal MTWA occurred more often than in controls. Probability of abnormal MTWA did not rise with prevalence of malignant VA; however, presence of abnormal MTWA was associated with VA risk factors: pulmonary regurgitation, right ventricular enlargement, and consequent heart failure. The role of MTWA in selecting patients late after ToF repair at risk of SCD needs further observation.